Free SIP calculator to calculate mutual fund and other returns online. Enter SIP amount, duration weekly, quarterly, yearly & expected returns to see your investment growth. What is a SIP Calculator? A SIP Calculator helps investors estimate the returns from mutual fund investments made through a Systematic Investment Plan (SIP). The calculator requires inputs such as the investment amount, investment period, interest rate, and the frequency of SIP investments. SIP Calculator is a free online tool that helps you estimate the wealth gain and expected returns for your monthly SIP investment in mutual funds. You can enter the monthly investment amount, investment period, expected annual returns and adjust for inflation to see the future value of your SIP. Online SIP Calculator from HDFC Mutual Fund helps you calculate the returns on your daily/weekly/monthly/quarterly SIP investments.